Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- California Institute of TechnologyUS2.6k papers
- Centre National de la Recherche ScientifiqueFR2k papers
- Massachusetts Institute of TechnologyUS1.9k papers
- University of FloridaUS1.8k papers
- Carnegie Mellon UniversityUS1.7k papers
- Princeton UniversityUS1.7k papers
- University of RochesterUS1.7k papers
- Purdue University West LafayetteUS1.6k papers
- Johns Hopkins UniversityUS1.6k papers
- University of Maryland, College ParkUS1.6k papers
- The Ohio State UniversityUS1.6k papers
- University of California, Santa BarbaraUS1.6k papers
86 papers · 2 filters
The Neon Abundance of Galactic Wolf-Rayet Stars
J. D. T. Smith, J. R. Houck
The fast, dense winds which characterize Wolf-Rayet (WR) stars obscure their underlying cores, and complicate the verification of evolving core and nucleosynthesis models. Core evo…
Complete Multiwavelength Characterization of Faint Chandra X-ray Sources Seen in the Spitzer Wide-Area IR Extragalactic (SWIRE) Survey
A. Franceschini, J. Manners, M. Polletta +24
We exploit deep combined observations with Spitzer and Chandra of the SWIRE survey in the ELAIS-N1 region, to investigate the nature of the faint X-ray and IR sources in common, to…
A new Search for Carbon Monoxide Absorption in the Transmission Spectrum of the Extrasolar Planet HD 209458b
Drake Deming, Timothy M. Brown, David Charbonneau +2
We have revisited the search for carbon monoxide absorption features in transmission during the transit of the extrasolar planet HD 209458b. We acquired 1077 high resolution spectr…
HI Narrow Self-Absorption in Dark Clouds: Correlations with Molecular Gas and Implications for Cloud Evolution and Star Formation
P. F. Goldsmith, D. Li
We present the results of a comparative study of HI narrow self-absorption (HINSA), OH, 13CO, and C18O in five dark clouds. The HINSA follows the distribution of the emission of th…
Spectral energy distributions and luminosities of galaxies and AGN in the SPITZER SWIRE Legacy Survey
M. Rowan-Robinson, T. Babbedge, J. Surace +28
We discuss optical associations, spectral energy distributions and photometric redshifts for SWIRE sources in the ELAIS-N1 area and the Lockman Validation Field. The band-merged IR…
350 micron Galactic Center Dust Observations with SHARC II
Johannes Staguhn, Dominic Benford, Mark Morris +1
We present first and preliminary submillimeter continuum images of the Galactic Center region obtained with the new Caltech Submillimeter Observatory facility camera SHARC II. The…
The Exploration of the Unknown
P. N. Wilkinson, K. I. Kellermann, R. D. Ekers +2
The Square Kilometre Array is conceived as a telescope which will both test fundamental physical laws and transform our current picture of the Universe. However, the scientific cha…
Fe K emission in the ultraluminous infrared galaxy Arp220
K. Iwasawa, D. B. Sanders, A. S. Evans +3
Prominent Fe K line emission is detected at around 6.7 keV in the XMM-Newton spectrum of the ultraluminous infrared galaxy Arp220. The continuum emission in the 2.5-10 keV band is…
The Truncated Disk of CoKu Tau/4
Paola D'Alessio, Lee Hartmann, Nuria Calvet +11
We present a model of a dusty disk with an inner hole which accounts for the Spitzer Space Telescope Infrared Spectrograph observations of the low-mass pre-main sequence star CoKu…
HI at a Redshift of Zero
Christopher M. Springob
While LOFAR and the SKA will enable the study of HI at the epoch of reionization for the first time, expectations for the distribution of HI at that redshift depend on our understa…
Morphology, Environment, and the HI Mass Function
Christopher M. Springob, Martha P. Haynes, Riccardo Giovanelli
We exploit a large, complete optical diameter and HI flux limited sample of spiral galaxies with types later than S0a to derive a robust measurement of the HI mass function (HIMF)…
Effects of Gravitational Lensing in the Double Pulsar System J0737-3039
Dong Lai, Roman R. Rafikov
We investigate the effects of gravitational lensing in the binary pulsar system J0737-3039. Current measurement of the orbital inclination allows the millisecond pulsar (A) to pass…
B Star Rotational Velocities in h and chi Persei: A Probe of Initial Conditions During the Star-Formation Process
Stephen E. Strom, Sidney C. Wolff, David Dror
Projected rotational velocities have been measured for 216 B0--B9 stars in the rich, dense h and chi Persei double cluster, and compared with the distribution of rotational velocit…
Exorcising w < -1
Csaba Csaki, Nemanja Kaloper, John Terning
We show that the combined dimming of Type Ia supernovae induced by both a cosmological constant and the conversion of photons into axions in extra-galactic magnetic fields can impe…
The Microarcsecond Sky and Cosmic Turbulence
T. Joseph W. Lazio, J. M. Cordes, A. G. de Bruyn +1
Radio waves are imprinted with propagation effects from ionized media through which they pass. Owing to electron density fluctuations, compact sources (pulsars, masers, and compact…
The Dynamic Radio Sky
James M. Cordes, T. Joseph W. Lazio, M. A. McLaughlin
Transient radio sources are necessarily compact and usually are the locations of explosive or dynamic events, therefore offering unique opportunities for probing fundamental physic…
Simulation of Coherent Synchrotron Radiation Emission from Rotating Relativistic Electron Layers
Bjoern S. Schmekel
The electromagnetic radiation of a rotating relativistic electron layers is studied numerically using particle-in-cell simulation. The results of the simulation confirm all relevan…
Relativistic Jets from Accretion Disks
R. V. E. Lovelace, P. R. Gandhi, M. M. Romanova
The jets observed to emanate from many compact accreting objects may arise from the twisting of a magnetic field threading a differentially rotating accretion disk which acts to ma…
Mini High Velocity Clouds
G. Lyle Hoffman, E. E. Salpeter, Ajay Hirani
Neutral hydrogen mapping of several small, very low column density High Velocity Clouds (HVC), using the Arecibo telescope, is reported. Some were found serendipitously superimpose…
Accounting for Source Uncertainties in Analyses of Astronomical Survey Data
Thomas J. Loredo
I discuss an issue arising in analyzing data from astronomical surveys: accounting for measurement uncertainties in the properties of individual sources detected in a survey when m…
Bayesian Adaptive Exploration
Thomas J. Loredo
I describe a framework for adaptive scientific exploration based on iterating an Observation--Inference--Design cycle that allows adjustment of hypotheses and observing protocols i…
Strong-Field Tests of Gravity Using Pulsars and Black Holes
M. Kramer, D. C. Backer, J. M. Cordes +3
The sensitivity of the SKA enables a number of tests of theories of gravity. A Galactic Census of pulsars will discover most of the active pulsars in the Galaxy beamed toward us. I…
Rotationally Supported Virgo Cluster Dwarf Elliptical Galaxies: Stripped Dwarf Irregular Galaxies?
L. van Zee, E. D. Skillman, M. P. Haynes
New observations of 16 dwarf elliptical galaxies in the Virgo Cluster indicate that at least seven dEs have significant velocity gradients along their optical major axis, with typi…
Gas near active galactic nuclei: A search for the 4.7micron CO band
D. Lutz, E. Sturm, R. Genzel +2
In order to constrain the properties of dense and warm gas around active galactic nuclei, we have searched Infrared Space Observatory spectra of local active galactic nuclei for th…